LTC4263IDE#TRPBF

Overview

The LTC4263IDE#TRPBF is a Power Sourcing Equipment (PSE) controller from Analog Devices, designed for high-power IEEE 802.3at PoE applications. It integrates a single power switch and control logic within a compact DFN-14 package. The device supports Class 4 classification with up to 25.5W output capability. It features programmable current limit, thermal shutdown, and fault reporting via the ALERT pin. Operating voltage ranges from 37V to 57V, ensuring compatibility with standard PoE midspan and endspan injectors.

Feature Summary

• Integrates a high-side power switch with PSE control logic for simplified design
• Supports IEEE 802.3at Class 4 classification for high-power delivery
• Includes thermal shutdown and over-current protection mechanisms
• Provides fault status indication through an active-low ALERT pin

Applications

• IEEE 802.3at compliant PoE midspan injectors
• High-power LAN port power sourcing equipment
• Network infrastructure power distribution units
• PoE-enabled access points and wireless controllers

Procurement Notes

Verify the exact suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the IDE variant meets industrial temperature range requirements (-40°C to +85°C). Check current availability status as supply may be limited. Ensure RoHS compliance documentation is obtained for regulatory adherence. Validate pinout compatibility with existing PCB layouts before procurement.

Selection Notes

Select this component for designs requiring integrated switching and control in a small footprint. Consider the DFN-14 package for thermal performance and space constraints. Evaluate the need for Class 4 power levels versus lower classes. Assess system requirements for thermal management given the integrated switch. Verify interface compatibility with microcontrollers for configuration and monitoring.

Part Context

This part belongs to the LTC4263 series of PoE PSE controllers. It is distinct from PD controllers like the LTC4269. The IDE suffix denotes industrial temperature grading. The TRPBF suffix specifies reel packaging with lead-free finish. It complements other PMICs in Analog Devices' portfolio for complete network power solutions.

Replacement Considerations

Direct substitutes include other LTC4263 variants with different temperature grades or packaging options. Cross-reference with LTC4263CDE#TRPBF for commercial grade alternatives. Verify functional equivalence with newer generations if available. Ensure pin-to-pin compatibility for direct replacement in existing designs.